Well that is the reason I havnt attempted the rear yet lol. I may use the rear hubs from a 335 as they are fairly cheap from breakers and they will most likely come with callipers etc. It may just be a matter of changing the shoes but I'll look more into it closer the time.

I have fitted the 3 stage manifold from 330I and loaded the mosselmon tune onto the ecu then I have verious other mods with a fine tune remap on top giving me 286bhp at the flywheel. If I was to compare power to weight ratio with a 335I I might just be on par.